Well, he needs to win the 3rd fight so he will have a chance to retire being a champion and could potentially make more money in the possible 4th fight.
Though Wilder lose badly, but we can't deny the fact that this guy makes history having the most KO wins in all his fights and there still a lot of people who believes in him they'll want him fight again against Fury, believe me, this would be an epic fights for these two biggy in boxing sports.